Principles of Mining
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In our eReader you can find the full English version of the book. Read Principles of Mining Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Principles of Mining
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Gasoline driven hoists have adistinct place in prospecting and early-stage mining, especially indesert countries where transport and fuel conditions are onerous, for both the machines and their fuel are easy of transport. As directgas-engines entail constant motion of the engine at the power demandof the peak load, they are hopeless in mechanical efficiency.
Like all other motors in mining, the size and arrangement of themotor and drum are dependent upon the duty which they will be calledupon t...o perform. This is primarily dependent upon the depth to behoisted from, the volume of the ore, and the size of the load. For shallow depths and tonnages up to, say, 200 tons daily, gearedengines have a place on account of their low capital cost. Wheregreat rope speed is not essential they are fully as economical asdirect-coupled engines. With great depths and greater capacities, speed becomes a momentous factor, and direct-coupled engines arenecessary. Where the depth exceeds 3, 000 feet, another elemententers which has given rise to much debate and experiment; thatis, the great increase of starting load due to the increased lengthand size of ropes and the drum space required to hold it.
What to read after Principles of Mining?
You can find similar books in the "Read Also" column, or choose other free books by Hoover Herbert to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Gasoline driven hoists have adistinct place in prospecting and early-stage mining, especially indesert countries where transport and fuel conditions are onerous, for both the machines and their fuel are easy of transport. As directgas-engines entail constant motion of the engine at the power demandof the peak load, they are hopeless in mechanical efficiency.
Like all other motors in mining, the size and arrangement of themotor and drum are dependent upon the duty which they will be calledupon t...o perform. This is primarily dependent upon the depth to behoisted from, the volume of the ore, and the size of the load. For shallow depths and tonnages up to, say, 200 tons daily, gearedengines have a place on account of their low capital cost. Wheregreat rope speed is not essential they are fully as economical asdirect-coupled engines. With great depths and greater capacities, speed becomes a momentous factor, and direct-coupled engines arenecessary. Where the depth exceeds 3, 000 feet, another elemententers which has given rise to much debate and experiment; thatis, the great increase of starting load due to the increased lengthand size of ropes and the drum space required to hold it.
What to read after Principles of Mining?
You can find similar books in the "Read Also" column, or choose other free books by Hoover Herbert to read onlineMoreLess
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